Mining machine



J. Ri-:cHlcHAR MINING MACHINE Sept.' 18 ,"19'23.

Filed Sept. 21,

2 sheets-smet 1 .....Iullfff'l'l lm/ventola sept. 1s, 1923.

J. RECHICHAR MINING MACHINE -1922 2 Sheets-Sheet 2 Filed Sept. 2l,4

Patented Sept. 18, 1923.

iran sreTE-v titane arent orion.

'JOSEPH RECHICHAR, F PLYMOUTH, PENNSYLVA, ASSIGNOR FORTY-FIVE PER l CENT T0 XVLLAM CLEARY, 0F PLYMOUTH, PENNSYLVANIA.

MINING MAoHiNE.

i .Application led September 21, 1922. Serial No. 589,622.

T 0 all who/m, t may concer/n: Y i Beit known that l, JOSEPH Rn'ci-iioHAn, a citizen ofV the VUnited .States of America, residing Plymouth, in the county of Luzerne and State of Pennsylvania, have invented lcertain new and luseful Improvements in Mining Machines, ofwliich the Vfollowing is a specification.

This invention relates to certain newand VVuseful improvements in "mining machines and has particular reference .to a portable apparatus especially .designed for the inining of coal, the coal-being chipped or `roken from@ standing wall by a portabledevice that is manually operable. A further object of the invention is to pro 7ide a mining `machine of the portable type wherein alcoinbin-ed rotating and reciprocably inountedrcutter blade is associated with a screw device for ieniovingthe vcoal and dust freni an opening formed by.

the machine.

With theabovev lgeneral objects in view and others that will appear as the nature of the invention is better understood, the

saine consists of the novelforin, combinationV and Vari-an'gement of parts'liereinafter more fully described, shown in the accompanying drawingsand claimed. n

Y In the drawings, wherein Vlike reference lcharacters designate corresponding `parts taken on line IIH of` Fig. 1 showing the Y' throughout `the several views, Figure 1 is a side el vational view of a mining machine constructed in `accordance. with the present invention showing the gearV rotated screw casingsupporting the reciprocal and 4rotary cutting blades,

Figure 2 is a longitudinal sectional view reciprocating mechanism for the cutter bladevsupportin'g rod and the adjustable f breast plate,

Figure 3 is a longitudinal sectional v i'ew taken on line Ill- Ill of Fig. 1, s

Figure et is afraginentary sectional v-iew of a portion of the machine showing -the tensioned reciprocating rodfwithinthe rotatable screw casing supporting the centering drills and the reciprocating v 'cutter blades, Y Y ,Y Figure is a fragmentary-side elevational view of the outer end of the rotating screw casing supporting the cutter blades,y A

Figure 6 in a cross sectional view taken Online Vl-VI of Fig. showingthe centering drill anchored to the outer endv of the screw casing, i' Y Figure is a fragmentary side elevational view, similar to Fig. -5,

Figure 8 is a fragmentary perspective view of the outer end of the screw casing,`

Figure 9v is al perspective view of the cutter blades, y

Figure 10 isa fragmentary perspective view of the centering drill, and y Figure 11 show perspective views of the clamping block and retaining plate for the centering drill.` Y Referring more in detail to the accompanying drawings, there is illustrated a mining machine of the portable type einbodying a rectangular casing having a rear wall 1, end walls 2 and 3, side wallse and 5 and a removable front wallG, the casing enclosing the `operating mechanism for the cutter blades. An arcuate breast plate Tis associatedwiththe end wall 3 of the casing, the same being shown more clearly. in F igsjl and?J and includes a central stubshaftfS swiveled in, the boss 3 carried by the Aend wall 3 of said casiiigand retained in adjusted positions relative to said casing by the screw 9 entering the groove 8a formed in the inner end of said stub shaft, the screw passradially through the end wall of the bearing'10 is formed integral with the end wallQ of the casiiigA and extends inwardly thereof, a sleeve 11 extending through said slot and end wall 2, being rotatable therein andhaving a beveled'gear 12 secured to the inner-` 'end thereof withinthe casing. To retain the rotatable sleeve 1 1 properly. posi- Ationed, a tubular screw casing13V` carrying a spiral bladell encloses the outer projecting end of said sleeve and is anchored j thereto bythe set screw 15,"the screw casing 18 ,being rotatable with said sleeve 11. The outerend ofthe screw casing 13 withL the `spiral blades 14reinoved is shown in Figs. .5 tov ,8, said tubular casing having crossed slots 16 and 17, the slots 17 `being of greater depth than the slots 16 for purposes presentlyto appear.

A sectional rod is Areciprocably mounted `within the rotatable screw casing 13, said lrod embodying a middle section 18 threaded at its outer end to the ,outer section 19 while therinnerend thereof is, linked as at QOto vllO thc inner .'sctionf21.` The sectional rod is resiliently mounted within the screw casing 13 for normally occupying a position at its liin'it ot' outward movement, the coil spring 22 surrounding the central rod section 18 being anchored at the outer end thereolf as at 23 to the casing 13 while the inner end of said spring is anchored as at 24- t0 the rod section 18, this construction being clearly 'shown in Fig. el. A cutter blade embodying bilurcated blade sections 25 includes a taperingl shank 26 that is received in the tapered vsocket 27 toi-ined in the outer end ot the rod section 19, the inner ends ot' tlie'cutter blades 25 being disposed in the relatively long slots 17 inthe outer end ot' the screw casing 13.

A centerinodrill 28 is suaiorted at the` n l l outer end ot' the screw casing 13, said drill being provided witlia block 29 at the inner end thereof having i'ack teeth 3() upon one side face, the block 29 of the centering drill being mounted in the support-ing arm 31 shown in detail in Fig. 11, the arm 31 having a si de socket with the rear wall thereot provided with rack teeth 33 to cooperate `with the rack teeth 30iipon the drill block 29, said drill lieins.r retained in the arm 31 by the plate 34. The arm 31 and plate 34 areprovided with registeringopenings 35 adjaffent each end thereoi", said arm being` disposed in the slot 16 at the outer end of the screw casing 13, one end thereoi being .anchored within the screw casing by the rivets 36 passing through the registering openings and openings 17a in the outer end of the screw casing. A removable cotter pin 37 anchors the opposite end ot the arm and ,plate to the screw casing as shown in Fig.

G. It will therefore be seen that the centering drill 28 is immovable relative to the screw casing 13. while the cutter blades 25k I carried'by. the link rod section v19 are reciprocable within thespace between the lower `ends ot the slots 1T and the inner edge-oth the a'rin 31.

The rotating and reciprocating mech-` Y anisin tor thescrew casing 13 and the link rod includes a. cross arm 38 positioned within the mechanism casing and having vthe 'ends Vthereof projecting between guides 39.

The link rod section 21 centrally extends f through the cross arm 38. `the same carrying wall 3`v the rock shai [a bearing nut Lt() threaded upon the lower end ot said rod section with bearing balls L,t1

interposed between the nuts 40 and the cross arm 38,',redueina' friction y, when the screw casing 13 and ,link rod rotate relative t0 Saidcrossarm 38. As shown more clearly in Figs. 1 to'3`, a rock shaft 421s journaled Vat itslopposite'ends in the side walls 4 and 5 'of the mechanism casing adjacent 'the end J"t carrying a centrally v`positioned -radial lug t3 having a link connectioii lll with the crotch oic a substantially Vs'haped 'frame 415, the ends 45a' of which side wall 4 of the mechanism casing adjacent the outer end thereof7 the frame supporting upon its inner end, a beveled gea-r 53 that meshes with the bevel gear 12 upon the sleeve 11, the outer projecting end ot'said shaft being provided with an adjustable crank handle 54 to ette-ct rotation thereof. A star `,wheel is fixed to the stub shaft 52 within the mechanism casing and is disposed torV engagement with the finger `upo1i the link arm 48. Y y Y In the operation of the device, tliebreast plate 7 is adjusted` to accommodate the inathine to the person using the saine` handle 56 being carried by the side wall 5 toi' gripping the machine, while the crank handle 54 isiotated toi' operating the machine. Upon Vvrotation of the stub shalt the points ot' the star wheel are successively moved into eiigageinentwith the linger 50 upon the link arm L 18, movingthe rock shaft 42 Vand the cross arm 38 through the guides 39, thereby ietracting the sectional link rod within the screw casing 13 and mechanism casing against the tension of the coil spring 22 for ret'iacting the cutter blades 25.` VWlhen the star'points escape the pins 50 upon the link arm 48, the coil spring 22 will forciblyv eject the link rod and mo've the cutter blade les 25 into engagement with a wall of coal.

During this operation. it being understood that the centering drill 28 carried by the outer end of the screw casing 13 is constantly Y in engagement with the wall ot" coal, the` meshing gears 53 and 12 will rotate the screw casing 13 together with theesections of the linked jrod accommodated by the swivel mounting of the inner end ot thev rod section 21 with thecross arm 33 as shown in Fig. t, causing the spiral blade 111 upon the screw casingV 13 to entera cut or drilled hole and by rotation thereof extracting the coa-l and dust 'from the'opening. The operation ofthe device iscontinucus, the screw casing 13 rotatingl simultaneously with the reciprocating movement of the linked rod andthe cutter blades 25'ca'rried thereby. The centering drill 28 .and cutter blades 25 are removably mounted in the machine to permit substitution of Vvarious/sizes ot drills and Vcutters and also for purpose'sot replacing the saine should injury result thereto. j

lVhile there is herein shown and described the preferred embodiment of the present invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope thereof as claimed.

What I claim ist; l. In a mining machine, a mechanism casing, a screw 'casing journaled therein, a rod recipro'ably mounted in the screw casing and extendinginto the mechanism casing, a cutter carried by the outer end of the rod, manually operable mechanism i'or reciprocating said rod, and a center drill fixed to the outer eiid of the screw casing.

2. In a mining machine, a mechanism casing, a screw casing journaled therein, arod reciproca-bly mounted iii the screw casing and extending` into the mechanism casing, a cutter carried by the'outer end of the rod, manually operable mechanism torreciprocating said rod, tlieconnection between the cutter and rod including a socket formed in the outer end ol the rod, a shank carried by the cutter extending into said socket and a center drill lixedto the outer end of the screw casing and retaining the cutter in the rod socket. v

n. In a mining machine, a mechanism casing. a screw asing journaled therein, a rod reciprocably mounted in the screw casing and extending into the mechanism casing,

`a cutter carried by the outer end of the rou,

manually operable mechanism for reciprocating said rod, a'center drill including a. cross arm extending across to the cuter end of the screw casing, the connection between the cutter and rod including a socket `formed in the outer end of the rod and a shank carried by the cutter extending into said socket and positionedinwardly`of :the drill cross arm. v i v 4. In a mining machine, a mechanism cas` ing, a screw casingjournaledltherein, a rod reciprocably Vmounted in tlie screu1 casing' and extending into the mechanism casing, a cuttervca-rried by the outer endet the rod,

Y, manually operable mechanism for recipro eating said rod, the connection between the cutter and rod including a socket formed in the outer end of the rod, a shank carried by the cutter extending into said socket, the outer end of the screw casing haif'ing a transverse slot therein and said cutter including Vside blades extending through the slet.

In a mining machine, a'iiiechanisin casing, a screw casing journaled therein, a rod reciprocably mounted` in the screwV casing and extending into the mechanism casing',

V a cutter carriedlby the outer end of `the rod,

manually operable mechanism for reciproeating said rod, a center drill fixed to the ,outer'end of the screw casing, the connection lietween the cutter 'and rod includinga Vsocket formed in the outer end of the rod,

a shank carried by the cutter extending into said socket, the outer end of the screw casing having a transverse slot therein and said cutter including side blades extending through the slot.`

6. In a mining machine, a mechanism casing, a screw casing journaled therein, a rod reciprocably mounted in the screw casing and extending into the mechanism casing, a cutter carried by the outer end of the rod, manually operable mechanism vlor reciproeating said rod, the connection Vbetween Vthe cutter and rod including a socket formed in the outer end of the rod, ai shank carried by the cutter extending into said socket, the outerend of the screw casinghaving a trans: verse slot-therein, said cutter including side blades exten ling.throughtheslot, the coniiectionbetween the center drill and screw casing including a slot formed in the vouter end of the screw casing at right angles to the cutter slot, and an'arm removably mounted in the slot supporting the` center drill. Y

7. In a mining machine, a iiiecbanism cas-A ing, a screw casing journaled therein, a red reciprocably mounted in the .screw casing and extending into the mechanism casing, a cutter carried by the outer end oit the rod, manually operable mechanism .for reciprocating said rod, a center drill fixed te the outer end of the screw casing,tlie connection between the cutter and rod including a socket formed inthe outer end of the rod, a shank carried by the cutter extending into said socket, theouter end of the screw casing having a. transverse slot therein, said cutter including side blades extending through the slot, the connection between the center drill and screw casing including aslet Aformed in the outer end of the screw casing at right angles to the cutter' slot, and an arm removzl'ilymounted in the slot supporting the` center drill.

8. In a mining machine, a mechanism casing, ascrew casing journaled therein, a rod reciprocably mounted in the screw casing and extending` into the mechanism casing, a cutter carried by the outer end of the r0d,. manually operable mechanism for reciprocating said r'od, the connection between the cutter and rod includingl a socket formed in the outer end ott-he rod, a shank carried by the cutter extending into said socket, the outer end of the screw casing having a transrerse slot therein, said cutter including side blades extending through the slot, a coil.` spring surrounding` the trod, anchored at its inner end theretoV and at its outer end to said screw Vcasii'ig and said manually open y able mechanism adapted to retract said red .against the tension of said springjto a posi- Vtion to 'permit the spring to forcibly egect the rod and cutter carried thereby.Y

9. ln a mining machine, a mechanism casing, a screw casinggourna-led therein, a rod reciprocably mounted in the screw casing and extendinginto the mechanism casing, a cutter carried by the outer end of the rod, manually operable mechanism for reciproeating said rod, a center drill fixed to the outer end of the4 screw casing, the connection between the cutter` and rod including; aY socket formed in the outer end of the rod, a shank carried by the cutter extending into said socket, the outer end of the screw casing' having' a transverse slot therein, said cutter including side blades extending through the slot, al coil spring surrounding lthe rod, anchored at its inner end thereto and at its outer end to said screw casing and said manually operable machanism adapted to ret 'act said rod against the tension of said spring' to a position to permit the spring to forcibly eject the rod and cutter carried thereby. Y

lt); In a mining machine, a mechanism casing, a'screw casing journaled therein, a rod reciprocably mounted in the screw casingand extending` into the mechanism casing, a cutter carried by the outer end of the rod, manually operable mechanism for reciprocating' said rod, the connection between the cutter and rod including' a socket formed in the outer end of the rod, a shank carried by the cutter extending' into said socket, the enter end ot the screw casing having` a transverse slot therein, said cutter including side blades extending; through the slot, a center drill connected to the outer end of the screw casing the connection between the center drill and screw casing' including a slot formed in the outer end of the screw casing at right angles to the cutter slot,an arm removably mounted in the slot supporting the center drill, a coil spring surrounding the rod, anchored at its inner end thereto and at its outer end to said screw casing;- and said manually operable mechanism adapted to retract said rod against the tension of said spring' tov a position to permit the spring to forcibly eject the rod and cutter carried thereby.

l1. In a miningr machine, a mechanism casing, a -screw casing journaled therein, a rod reciprocably mounted. in the screw casing and' extending into the mechanism casing, a cutter carried bythe outer end of the rod, manually operable mechanism for recipvrrocating` said rod, a center drill xed to the outer end `of the screw casing, theconnection between the cutter and rod including a socket formed in the outer end of the rod, a shank carried bythe cutter extending into ing having' a transverse slot therein, said cutter including; side blades extending through the slot, the connection between the center drill and screw casing; including a slot formed in the outer end ofthe screw casing at right angles to the cutter slot, an arm removably mounted in the slot supporting the center drill, a coil spring surrounding the rod anchored at its inner end thereto and at its outer end to said screw casing and said manually operable mechanism adapted to retract said rod against the tension of saidV spring to a position to permit the spring to forcibly eject the rod and cutter carried thereby.

l2. In a mining machine, a mechanism casing, adscrew casing journaled therein, a rod reciprocably mounted in the screw casing and extending' into the mechanism casing, a cutter carried by the outer end of the rod, manually operable mechanism for reciproeating' saidV rod, said manually operable iechanism including' a cross arm slidably mounted in the mechanism casing, swivel connection for the inner end of the rod and the cross arm, a manually rotated stub shaft journaled in a side wall of the mechanism casing, gear connections between the stub shaft and rod, a star 'wheel fixed to the stub shaft, a link arm slidable in'said casing` having a pin associated with the star wheel, a rock shaft and link connections between the rock shaft, cross arm and link arm.

13. In a mining' machine, a mechanism casing', a screw casing,` journaled therein, a rod reciprocably mounted in the screw casing and extending into the mechanism casing, a cutter carried by the outer end of the` rod, manually operable mechanism forreciproeating said rod, a center drill fixedto the outer end of the screw casing,said manually operable mechanism including a cross arm slid-ably mounted in the mechanism casing, swivel connection for the inner end of the rod and the cross arm, a manually rotated stub shaft journaled in a side wall of the mechanism casing', gear connections between the stub shaft and rod. :listar-wheel fixed to the stub shaft, a link arm slidable in said casina' having' a pin associated with the star wheel, a rock shaft and link connections between therock shaft, cross arm and link arm.

14. In a. mining machine, a mechanism casing', a screw casing journalcd therein, a rod reciprocably mounted in the screw casing and extending into the mechanism casing', a cutter carried by the outer' end of the rod, manually operable mechanism for reciprocating said rod, the A connection between the cutter' and rod includinga socket formed in the outer Vend of the rod, ashank carried bythe cutter extending into said Y socket, the outer end of thescrew casing said socket, the outer end of: the screw cash ying a `transverse slot therein and said cutter including side blades extending' through the slot. said manually operable` mechanism including a cross arm slidably mounted in the mechanism casing, lswivel connection for the inner end of the rod and the cross arm, al manually rotated-stub shaft "casing, a screw casing journaled therein, a krod'reciprocably mounted in the screw casing and extending into the mechanism casing, a cutter carried by 'the outer end of the rod, manually operable mechanism 'for rei ciprocating said rod, a center drill fixed toV theouter end oit the screw casing, thcconnection -between the cutter and .ii-od including'a socket formed in the outer end ofV the i rod, a shank carried by the"cutter extending into said socket, the outer end ot the screw` lcasing haring a transverse Vslot therein and said cutter including side blades `extending lthrough Ythe slot. said. manually operable.

mechanism including a cross arm slidably mounted in the mechanism casing, swivel connection tor the inner end ot the rod and the cross arm, a manually rotated stubshatt journaled in a side wall ol. theV mechanismV casing, gear connections between the stub shaftand rod, a starwheel fixed to the stub shaft, a vlink arm slidable in :said casing havingV a pin associated with the star wheel,

Yarock shaft and link connections between the rock shaft.V cross-arm and link arm.

16. in a mining machine, a mechanism casing, a screw casing' journaled therein, a

rod reciprocably mounted in the screw casing and extending' into the mechanism casing,- a cutter carried by the outer'end of the rod, manually operable mechanism for reciprocating said rod, the connection between the cutter and rod including a socket` formed in the outerV end of the rod, a shank vcarried bythe cutter, extending into said socket, theV outer end ot the screw casing havingr a transverse slot therein, said cutter *including side blades extending through the slot, a center drill connected to the outer end of the screw casing the connection lietween the center drill and screw casing including a slot formed in the outer end ot p the screw casing at right angles to the cutter slot, an arm removably mounted in the slot` supporting the center drill, said manually operable mechanism including a cross arm slidably7 mounted in the mechanism casing, swivel connection 'tor the inner end of the rod and the cross arm, a manually7 rotated stub shaft Vjournaled in a side wall. of the mechanism casing, gear connections between the stub shaft landirod, a star wheel fixed to the stub shaft, a link arm slidable in said casing having a pin associated with the star wheel, a rock shaft and link connections between the rock shaft, cross arm and link arm.,

"ing into said socket, the, outer end ot the screw casing havingV a transverse slot therein, said cutter including side blades extending through 'the slot, the connection between the center drill and screw casing including a slot formed in the outer end ot. the screw casing at right angles to the cutter slot, an armremovably mounted in the slot supporting the center drill, said manually operable mechanism including" a cross arm slidably mounted in the mechanism casing, swivelV connection for the innercnd of the rod and the cross arm, a manually r-otated stub sha'tt journaled in side wall ot' the mechanism casing, gear connections between the stub shaft and rod, a star wheel fixed to the stub` shaft, a link arm slidable in said casing having a pin associated with the `star wheel, a 'rock shaft and link connections between the rock shatt,'cross arm i and link arm.

18...ln a mining machine, a mechanism casing, a screw casing iournaled therein` U Y i ,l 0

rod reciprocably mounted ingthe screw casing and extending into the mechanism having a transverse slot therein, said cutter including side blades extending through 4the slot, a coil` spring surrouiiding` the rod, anchored at its inner end thereto and at its outer end to said screw casing and said manually operable mechanism adapted to retract said rod against the tensionot said spring to a position to permit the spring to forcibly eject the rod and cutter carried thereby. said manually operable mechanism including a cross' arm slidably mounted in the mechanism casing,I swi'if'el connection for the inner end'o'lI the rod and the cross arm, a manually rotated stub shaft journaled in a side wall of the mechanism casing, gear connections between the stub shaft and rod, a star wheel fixed to the stub shaft, a link arm slidable in said casing having a pin associated with the star wheel,y a rock shaft and link connections between the rock shaft, cross arm and link arm.

19. In a mining machine, a mechanism casing, a screw casingjournaled therein, a rod reciprocably mounted in the screw casingr and extendingl into the mechanism easing', a cutter carried by the outer end ot the rod, manually operable mechanism for reciprocating said rod. a center' drill fixed to the outer end ot the screw casing, the connection between the cutter and rod includingia socket formed in the outer end orn the rod, a shank carried by the cutter extending into said socket, the outer end ot the screw casing having a transverse slot therein, said cutter including side blades extending,` through the slot, a coill spring surrounding the rod, anchored at its inner end thereto and at its outer end to said screw casing and said manually operable mechanism adapted to retract said rod against the tension of said spring' to a position to permit the springv to forcibly eject the rod and cutter carried thereby, said manually operable mechanism including a cross arm slid- Vably mounted in the mechanism casing,

swivel connection for the inner end ot the rod and the cross arm, a manually rotated stub shaft journaled in a side wall. ot the mechanism casing, gear connections between the stub shaft and rod, a star wheel iixed to the stub shaft, a link arm slidable in said A casing having a pin associated `with the star wheel, a rock shaft and link connections etweein the rock shaft. cross arm and link arm.

20. In a miningr machine, a mechanism casing, a screw casingjournaled therein, a rod reciprocably mounted Vin the screw and extending into the mechanism casing, a cutter carried by the outer end of the rod, manually operable mechanism for reciprocating' said rod, the connection between the cutter and rod including a socket termed in the outer end of the rod,

' a shank carried by the cutter extending,r into 'said socket, the outer endl of the screw casing havinga transverse slot therein, said cutter including` side blades extending ythrough the slot-4a center drill connected to the outer end ot the screw-casing', the connection between the center drill and screw casingincluding' a slot formed in the outer end of' the screw casing at right angles to the cutter slot, an arm removably mounted in the slot supporting the center drill, a coil spring surroundingy the rod, anchored at its inner end thereto and at its outer end to said screw casing' and said manually operable mechanism adapted to retract said rod ifieasae against the tension oi' said spring to a position to permit the spring to forcibly eject the rod and cutter carried thereby, said manually operable mechanism includinga cross arni slidably mounted in the mechanism casing, swivel connection for the inner end ot the rod and the cross arm, a manually rotated stub shaft `iournaled in a sidewall ot the mechanism casing, igear connections between the stub shaft and rod, a star wheel tixed to the stub shalt, a link arm slidable in said casinghaving a pin associatedwith the star wheel, a rock shaft and link connections between the rock shaft, crossarm and link arm. f

Q1 In a mining` machine, a mechanism casing, a screw casingv journaled therein, a rod reciproeably mounted in the screw casing` and extending' into the mechanism casing, rod, manually operable mechanism for reciprocating said rod, a center drill xed to the outer end ot the screw casing, the connection between the cutter and rod including,v a socket formed in the outer end'ot the rod, a shank carried by the cutter extending` into .said socket, the outer end oit the screw casing having atransverse slot therein, said cutter including side blades extending'through the slot7 the connection between the center drill and screw casingl including a slot -itormed in a cutter carried bythe outer end oit` the,

the outer end ot' therscrew easing at right angles to the cutter slotv` an arm removably mounted in the slot supportingl the center drill, a coil spring` surrounding the rod, anchored at its inner end thereto and at its outer end to said screw casing and said -nianually operable mechanism adapted to retract said rod against the tension or" said spring to a position to permit the springto forcibly eject the rod and cutter carried thereby, said manually operable mechanism including a cross arnislidably mounted in the mechanism' easing, swivel connection tor the inner end ot the rod andthe cross arm, a manually rotated stub shaft ournaled in a side wall oi the mechanism casing, gear connections between the stub shaft and rod, a star wheel iixed to the stub shalt, a link arm slidable in saidicasing having a pin associated with the star wheel. a rock shaft and link connections between the rock shaft, cross arm and link arm.

ln testimony whereot'l athx my signature.

Jessen inacniciima` 

